Dental cuspidor.



PATENTED JULY 5, 1904.

H. E. WEBER.

DENTAL GUSPIDOR.

APPLICATION FILED MAR. 11. 1904.

N0 MODEL.

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Patented July 5, 1904.

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PATENT HENRY E. WEBER, OF CANTON, OHIO.

DENTAL CUSPIDOR.

SPECIFICATION forming part of Letters Patent No. 764,022, dated July 5, 1904:.

Application filed March 11, 1904. Serial No. 197,616. (No model.)

To all whom it may concern.-

Be it known that I, HENRY E. WEBER,a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented a new and useful Improvement in Dental Cuspidors, of which the following is a specification.

The invention relates to cuspidors for use more particularly in dental surgery, in which there is a constant flow of water from an inlet-tube discharging in the bowl; and the objects of theimprovement are to provide means in connection with the main valve for passing the inlet-tube and an overflow-channel through a single aperture in the side of the cuspidor and for connecting the overflow-channel with the drain-pipe below the neck of the cuspidor, so as to make an air-vent of it as well. These objects are attained by the construction and arrangement illustrated in the accompanying drawings, in which Figure 1 is a vertical section of the cuspidor, showing the main valve and inlet-tube and overflow-channel; Fig. 2, a horizontal section of the main valve and the inlet-tube and overflow-channel connections; Fig. 3, a detached perspective longitudinal section of the valve-case; Fig. 4, a detached perspective section of the connecting-sleeve; and Fig. 5 a detached perspective view of the inlet-tube,

the ring-screw, and the packing-washer.

Similar numerals refer to similar 'parts throughout the drawings.

The cuspidor-bowl 1 is preferably made of glass, and its neck 2 is suitably connected with the drain-pipe 3. The overflow-pipe 4 is connected with the drain-pipe, preferably by the tubular bracket 5, which bracket also furnishes a support for the main water-supply pipe 6. The main-valve case 7 is provided with the tubular extension 8, and it is attached on the side of the bowl by means of the connecting-sleeve 9, having the rim-flange 10, which sleeve is adapted to be entered through the aperture 11 in the side wall of the bowl and to be screwed into the tubular extension of the valve-case. The intervening washers 12 are preferably provided on each side of the wall of the bowl to make atight and substantial joint with the sleeve-flange and the case extension on each side thereof.

The main supply-pipe 6 is connected in the lower end of the usual through-passage 13 of the valve-case, in the upper end of which passage is connected the tubular post 14, on which is attached the usual tumbler-holder 15, and to the tubular part of the post is connected the supply-pipe 16, leading to the usual tumbler-faucet and saliva ejector-valves. (Not shown.) The axial valve-port 17 leads from the outer side of the through-passage to the valve-chamber 18,-from which chamher the lateral ports 19 pass back on each side of the through-passage and converge into the The external annular shoulder 22 is provided near the end of the inlet-tube, which shoulder is adapted to bear' against the valvecase around the inlet-port, preferably with the packing-washer 23 intervening to prevent any leakage, and on the inlet-tube at a point within the connecting-sleeve is also provided the opposing external annular shoulder 24, against which shoulder is brought to bear the rotatable ring 25, which is adapted to be screwed into the connecting-sleeve, by which means the inlet-tube is readily connected with the valve or detached therefrom when the valve is connected with the cuspidor-bowl without any rotation of the tube itself, such a rotation being prohibited by reason of the peculiar shape of the tube and the overhanging rim 26 of the bowl.

The overflow-pipe 4 is connected in the lower side of the tubular extension of the valve-case, and the apertures 27 are provided in the ringscrew around the inlet-tube, so that water is free to overflow from the bowl through these apertures and through the channel 28, formed around the inlet-tube in the connecting-sleeve and tubular extension of the valve-case, and into and through the overflow-pipe into the drain-pipe, and, conversely, any air which may accumulate in the drain-pipe is free to escape through the overflow-pipe and the same channel and apertures. The apertured ring-screw also acts as a screen for the outlet-channel.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A cuspidor-bowl having an aperture in its side, a valve-case having a tubular extension and an axial port opening therein, a sleeve having a rim-flange and adapted to be entered through the aperture and screwed into the tubular extension, an inlet-tube adapted to be entered in the axial port a rotatable apertured ring on the tube adapted to be screwed into the sleeve, there being opposed annular shoulders on the tube adapted to bear against the valvecase and the ring-screW, and a pipe leading from the tubular extension.

HENRY E. WVEBER.

Witnesses:

JOSEPH FREASE, HARRY FREASE. 

